What are the end product of protein digestion?

The end products of protein digestion are amino acids. Proteins are large molecules made up of chains of amino acids. During digestion, these proteins are broken down into smaller and smaller peptides by enzymes such as pepsin, trypsin, and chymotrypsin. These peptides are then further broken down into individual amino acids by enzymes such as carboxypeptidases and aminopeptidases. These amino acids are then absorbed into the bloodstream and can be used to synthesize new proteins or other molecules, or they can be broken down further to produce energy.